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Is RCD required on an addition

Ok, we've just had a new utility room and downstairs toilet made and the downstairs ring-main has been extended to provide sockets, the chap who did it was suitably qualified. 

Now someone else has said that he should have fitted an RCD to meet modern regulations and I think that that would constitute best practice however, is it necessary?

According to BS7671:2018 On-Site Guide  Sect 7.8:

“Installers adding or amending circuits in dwellings will encounter older consumer units, i.e. those not complying with Regulation 421.1.201, for many years to come.  It is important that installers do not advise the replacement of consumer units simply because they do not comply with the current version of BS7671.  To ensure the ongoing use of such enclosures and assemblies, the installer must ensure the following:

Also BS 7671 Sect 651.2 Note 2 “Existing installations may have been designed and installed to conform to previous editions of BS7671, applicable at the time of their design and erection.  This does not necessarily mean that they are unsafe”.

Should he have fitted RCDs?
Parents
  • Former Community Member
    0 Former Community Member
    My view is that the regulations do not insist that all aspects of the existing installation are brought up to current regulation standards as they were presumably installed to meet a previous versions of the regulations which was fine. However if new sockets have been installed then this work should meet the regulations at that time regardless of if the sockets are installed as a new circuit or an addition to an existing circuit. An RCD would be also be required for any new wiring supplying a luminaire (411.3.4) or also if the cable is T&E buried in plaster (depending on how this is done) (522.6.202).
Reply
  • Former Community Member
    0 Former Community Member
    My view is that the regulations do not insist that all aspects of the existing installation are brought up to current regulation standards as they were presumably installed to meet a previous versions of the regulations which was fine. However if new sockets have been installed then this work should meet the regulations at that time regardless of if the sockets are installed as a new circuit or an addition to an existing circuit. An RCD would be also be required for any new wiring supplying a luminaire (411.3.4) or also if the cable is T&E buried in plaster (depending on how this is done) (522.6.202).
Children
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